Spraying device and movable apparatus

Abstract

The application discloses a spraying device and a movable device, the spraying device comprising: a driving motor, comprising a stator seat and a motor rotating shaft extending downward from a bottom wall of the stator seat, an outer wall of the stator seat being provided with a waterproof mounting portion which does not penetrate the outer wall of the stator seat; a flow guide member provided with a liquid discharge port and fixedly connected with the stator seat through the waterproof mounting portion; and a spraying disc arranged below the flow guide member and connected with an extended end of the motor rotating shaft penetrating through the flow guide member. The movable device comprises a movable device body and the spraying device, the spraying device being connected with the movable device body through the stator seat. An intermediate connecting plate is arranged between the flow guide member and the bottom wall of the stator seat, the intermediate connecting plate being provided with a first rotating shaft penetrating hole for the motor rotating shaft to penetrate, the intermediate connecting plate being provided with a waterproof member accommodating groove around the first rotating shaft penetrating hole, and a waterproof sealing member being accommodated in the waterproof member accommodating groove. The spraying device and the movable device have good reliability and long service life.

Description

Technical Field

[0001] This invention relates to the field of spraying device technology, specifically to a spraying device and a movable device. Background Technology

[0002] In recent years, with the development of multi-rotor aircraft, their advantages such as maneuverability, unmanned flight, and low operational requirements have led to their application in various fields, especially in agricultural plant protection. The spraying device on a multi-rotor aircraft is one of the important components affecting its operational efficiency. However, because the drive motor of the spraying device needs to be sealed and protected, with the motor body encased in a shell, the heat dissipation of the drive motor is poor, which can easily lead to a reduction in the reliability and service life of the drive motor. Summary of the Invention

[0003] The purpose of this invention is to provide a novel spraying device and mobile equipment that are highly reliable and have a long service life.

[0004] To achieve the above objectives, the present invention provides a spraying device, which includes:

[0005] A drive motor includes a stator base and a motor shaft extending downward from the bottom wall of the stator base. The outer wall of the stator base is provided with a waterproof mounting part that does not penetrate the outer wall of the stator base.

[0006] The guide component is equipped with a drain outlet and is fixedly connected to the stator base via a waterproof mounting part; and

[0007] The spray disc is located below the guide vane and connected to the protruding end of the motor shaft that passes through the guide vane.

[0008] In some embodiments, the waterproof mounting part consists of multiple blind mounting holes on the bottom surface of the bottom wall of the stator base, and the flow guide has multiple flow guide mounting holes corresponding to the multiple blind mounting holes. The flow guide and the stator base are fixedly connected by fastening connectors passing through the flow guide mounting holes and the blind mounting holes.

[0009] In some embodiments, the top surface of the bottom wall of the stator base may be provided with a bottom wall reinforcing rib, and the mounting blind hole extends upward from the bottom surface of the bottom wall of the stator base into the bottom wall reinforcing rib.

[0010] In some embodiments, an intermediate connecting plate may be provided between the flow guide and the bottom wall of the stator base. The intermediate connecting plate covers the upper opening of the flow guide and has a first shaft through hole through which the motor shaft passes. The hole wall of the first shaft through hole extends downward and the upper hole wall of the first shaft through hole is radially recessed outward to form a stepped shaft-shaped waterproof component receiving groove. A waterproof sealing ring is accommodated in the waterproof component receiving groove.

[0011] In some embodiments, the guide member may be provided with a second shaft outlet hole through which the motor shaft passes, and a plurality of drain ports are arranged circumferentially at intervals along the second shaft outlet hole. The peripheral wall of the second shaft outlet hole extends upward and abuts against the peripheral wall of the first shaft outlet hole around the first shaft outlet hole.

[0012] In some embodiments, the spraying device may further include a liquid receiving conduit for supplying liquid to the guide element, one end of which extends into the guide cavity of the guide element and is fixedly connected between the intermediate connecting plate and the guide element.

[0013] In some embodiments, the stator base may include a stator base body having a stator base cavity and an upper cover that closes the stator base cavity, the top wall of the upper cover having a mounting device connection hole for fixed connection with the mounting device.

[0014] In some embodiments, the bottom wall of the stator base may be formed with a third shaft outlet hole through which the motor shaft passes and a lower bearing receiving groove arranged around the third shaft outlet hole. The upper cover is provided with an upper bearing receiving groove. The motor shaft is rotatably connected to the stator base through the lower bearing housed in the lower bearing receiving groove, and the motor shaft is rotatably connected to the upper cover through the upper bearing housed in the upper bearing receiving groove.

[0015] In some embodiments, the drive motor may further include a control circuit board disposed below the upper cover; and / or, the top wall of the upper cover may be provided with a wire outlet hole, which is sealed by potting adhesive.

[0016] In some embodiments, the extended end of the motor shaft can be connected to the spray disc via a connecting shaft. The connecting shaft is sleeved on the motor shaft and riveted to it. The spray disc has a through central connecting hole and a connecting shaft limiting groove located above the central connecting hole. One end of the connecting shaft is inserted into the connecting shaft limiting groove and forms a circumferential limiting structure with the connecting shaft limiting groove. The spray disc is fixedly installed on the inserted end of the connecting shaft by fasteners passing through the central connecting hole.

[0017] In some embodiments, the insertion end of the connecting shaft may be in the shape of a flat shaft and be inserted into the connecting shaft limiting groove to form a circumferential limiting structure.

[0018] Accordingly, the present invention also provides a mobile device, which includes a mobile device body and the above-mentioned spraying device, wherein the spraying device is connected to the mobile device body via a stator.

[0019] The spraying device and mobile device of the present invention include a drive motor, a flow guide, and a spraying disc. The flow guide is mounted on the bottom wall of the stator base via a waterproof mounting part, which is located on the outer wall of the stator base but does not penetrate through it. This improves the waterproof sealing of the drive motor. At the same time, the flow guide is directly mounted on the stator base, eliminating the need for a housing to enclose the drive motor and reducing the number of waterproof seals required. This not only effectively improves the heat dissipation capacity of the drive motor and enhances its reliability, but also significantly extends the service life of the spraying device. Furthermore, it makes the assembly of the spraying device more convenient and reduces manufacturing costs.

[0020] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 A schematic diagram of a spraying device according to a specific embodiment of the present invention is shown;

[0023] Figure 2 for Figure 1 A sectional view;

[0024] Figure 3 and Figure 4 They are respectively Figure 1 Exploded view of the installation of the spraying device;

[0025] Figure 5 for Figure 2 A schematic diagram of the stator base body in the diagram;

[0026] Figure 6 for Figure 2 A schematic diagram of the structure of the intermediate connecting plate in the diagram; and

[0027] Figure 7 for Figure 2 A schematic diagram of the flow guide component in the diagram.

[0028] Explanation of reference numerals in the attached figures

[0029] 100 Spraying Device

[0030] 1. Drive motor; 11. Stator mount

[0031] 111 Installation of blind holes; 112 Bottom wall reinforcing ribs

[0032] 113 Stator base body 1131 Stator base cavity

[0033] 1132 Third shaft through hole; 1133 Lower bearing receiving groove

[0034] 1134 Upper cover connection hole; 114 Upper cover

[0035] 1141 Mounting equipment connection hole; 1142 Upper bearing receiving groove

[0036] 1143 Cable outlet 12 Motor shaft

[0037] 13 Lower bearing 14 Upper bearing

[0038] 15 Control circuit board 16 Rotor

[0039] 17. Stator winding 2. Conductor

[0040] 21 Drain port 22 Second shaft through hole

[0041] 23. Flow guide cavity; 24. Flow guide mounting hole

[0042] 3. Spray disc 31. Center connection hole

[0043] 32 Connecting shaft limiting groove 4 Intermediate connecting plate

[0044] 41 First shaft through hole 42 Waterproof component receiving groove

[0045] 43 Waterproof sealing ring; 44 Connecting plate mounting hole

[0046] 45. Tube fixing slot; 5. Liquid receiving tube.

[0047] 6 Connecting shafts Detailed Implementation

[0048] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0049] The following description, with reference to the accompanying drawings, describes a spraying device and a mobile device according to the present invention, which are characterized by low manufacturing cost, high reliability, and long service life.

[0050] Existing spraying devices generally have low reliability and service life. In view of this, the inventors of this application have continuously thought about and researched and found that there are two important reasons affecting the reliability and service life of spraying devices. The first is the corrosion problem of the drive motor. Due to insufficient sealing of the drive motor, the sprayed liquid can easily enter the drive motor and cause corrosion failure. The second is that the operating temperature of the drive motor is too high, which leads to burnout. This is because the friction between the relatively moving parts generates a lot of heat and cannot be dissipated in a timely and effective manner, resulting in low heat dissipation efficiency.

[0051] In view of this, the inventors of this application provide a spraying device 100, which includes a drive motor 1, a guide member 2, and a spraying disc 3. The drive motor 1 includes a stator base 11 and a motor shaft 12 extending downward from the bottom wall of the stator base 11. The extended end of the motor shaft 12 passes through the guide member 2 and is connected to the spraying disc 3, driving the spraying disc 3 to rotate. The guide member 2 is provided with a drain port 21, and the spraying disc 3 is located below the guide member 2. Thus, the liquid to be sprayed flows through the guide member 2 and from the drain port 21 to the spraying disc 3, and the rotating spraying disc 3 can centrifugally spray the liquid out. The outer wall of the stator base 11 is provided with a waterproof mounting part that does not penetrate the outer wall of the stator base 11. The guide member 2 is fixedly connected to the stator base 11 through the waterproof mounting part. Since the waterproof mounting part does not penetrate the outer wall of the stator base 11, the waterproof sealing of the drive motor 1 is improved. To protect the drive motor and ensure its waterproof sealing, existing spraying devices often use additional motor protective housings and waterproof fasteners to prevent sprayed liquid from entering the motor and causing failure. However, the outer housing hinders heat dissipation, severely impacting the motor's reliability and lifespan. In contrast, the spraying device 100 of this application directly mounts the guide component 2 onto the stator base 11, using the stator base 11 as the mounting carrier for the guide component 2. This eliminates the need for a housing to enclose the drive motor 1 and reduces the number of waterproof seals required. This not only effectively improves the heat dissipation capacity of the drive motor 1, resulting in higher reliability and significantly extending the lifespan of the spraying device 100, but also makes assembly easier and manufacturing costs lower.

[0052] It should be noted that the structure and installation position of the waterproof mounting part can vary. For example, the waterproof mounting part can be multiple lug connecting parts extending outward from the outer periphery of the stator base 11. Each lug connecting part has a lug mounting hole. Correspondingly, the guide member 2 has multiple guide member mounting holes corresponding to the lug mounting holes. The guide member 2 and the stator base 11 are fixedly connected by fastening connectors passing through the guide member mounting holes and lug mounting holes. Alternatively, the waterproof mounting part can also be, for example, multiple snap-fit ​​connecting parts provided on the outer periphery of the stator base 11. Correspondingly, the guide member 2 has multiple guide member hooks that snap into each of the snap-fit ​​connecting parts. The guide member 2 is fixedly connected to the stator base 11 through the snap-fit ​​engagement between the guide member hooks and the snap-fit ​​connecting parts. Of course, in addition to the above-mentioned structure and installation position, the waterproof installation part can also be other installation structures that do not penetrate the outer wall of the stator base 11. The waterproof installation part can also be set in other positions on the outer wall of the stator base 11, such as the bottom wall of the stator base 11. This application is not limited to this.

[0053] In some embodiments, the waterproof mounting part can be a plurality of blind mounting holes 111 provided on the bottom surface of the bottom wall of the stator base 11. The guide member 2 is provided with a plurality of guide member mounting holes 24 corresponding one-to-one with the plurality of blind mounting holes 111. The guide member 2 and the stator base 11 are fixedly connected by fasteners passing through the guide member mounting holes 24 and the blind mounting holes 111. In this way, since the waterproof mounting part is provided on the bottom surface of the bottom wall of the stator base 11, there is no need to increase the volume of the outer periphery of the stator base 11, which makes the structure and volume of the spraying device 100 simpler and more compact. In addition, the waterproof mounting part is a blind mounting hole 111 provided on the bottom surface of the bottom wall of the stator base 11, which has a simple installation structure and convenient installation operation, without the need for additional component configuration and complex manufacturing process, effectively reducing manufacturing costs and improving production efficiency.

[0054] Specifically, such as Figures 1 to 7 As shown, the drive motor 1 includes a motor shaft 12, a rotor 16, and a stator assembly. The motor shaft 12 and the rotor 16 are fixedly connected. The stator assembly includes a stator base 11 and a stator winding 17 fixed in the stator base 11. The motor shaft 12 and the rotor 16 are rotatably disposed in the stator base cavity 1131 of the stator base 11. The bottom wall of the stator base 11 has a third shaft through hole 1132 through which the motor shaft 12 passes. The motor shaft 12 extends downward from the third shaft through hole 1132 on the bottom wall of the stator base 11. The bottom surface of the stator base 11 has a plurality of blind holes 111 spaced out circumferentially along the bottom wall. The outer peripheral wall of the flow guide 2 has a connecting flange portion extending radially outward. The connecting flange portion has a plurality of flow guide mounting holes 24 spaced out circumferentially, corresponding one-to-one with the plurality of blind holes 111. The flow guide 2 is fixedly connected to the stator base 11 by fastening connectors passing through the flow guide mounting holes 24 and the blind holes 111.

[0055] In addition to the drain port 21, the guide member 2 may also have a second shaft outlet hole 22 independent of the drain port 21. The protruding end of the motor shaft 12 passes through the second shaft outlet hole 22 and exits the guide member 2 to connect with the spraying disc 3. Of course, this application is not limited to this; the guide member 2 may also not have the second shaft outlet hole 22, in which case the protruding end of the motor shaft 12 passes through the drain port 21 and exits the guide member 2 to connect with the spraying disc 3. The spraying structure of the spraying disc 3, in addition to being... Figure 1 Outside the spray plane, the structure of the spray disk 3 can be varied, such as a spray structure with multiple circumferential guide distribution grooves, etc., and this application is not limited to this. In addition, the spraying device 100 guides the liquid to be sprayed onto the spray disk 3 through the guide member 2, which eliminates the need to process the motor shaft 12 into a hollow shaft, effectively reducing the processing difficulty and manufacturing cost.

[0056] Optionally, the stator base 11, as the mounting carrier for the flow guide 2, needs to ensure sufficient structural strength. Therefore, the top surface of the bottom wall of the stator base 11 is provided with a bottom wall reinforcing rib 112. At the same time, in order to reduce the thickness and weight of the bottom wall of the stator base 11, the mounting blind hole 111 can be extended upward from the bottom surface of the bottom wall of the stator base 11 to the bottom wall reinforcing rib 112.

[0057] In some embodiments, to further enhance the waterproof sealing of the drive motor 1, a sealing design is required for the third shaft outlet hole 1132 of the stator base 11 to prevent liquid from entering the drive motor 1 from the third shaft outlet hole 1132 of the stator base 11. An intermediate connecting plate 4 is provided between the guide member 2 and the bottom wall of the stator base 11. The intermediate connecting plate 4 covers the upper opening of the guide member 2 and has a first shaft outlet hole 41 through which the motor shaft 12 passes. The hole wall of the first shaft outlet hole 41 extends downwards, and the upper hole wall of the first shaft outlet hole 41 is radially recessed outwards to form a stepped shaft-shaped waterproof component receiving groove 42, in which a waterproof sealing ring 43 is accommodated. Figures 2 to 4 As shown, the motor shaft 12 passes through the third shaft outlet hole 1132 of the stator seat 11, the waterproof sealing ring 43, the first shaft outlet hole 41 of the intermediate connecting plate 4, and the second shaft outlet hole 22 of the guide member 2 from top to bottom before connecting to the spraying disc 3. This effectively improves the waterproof sealing of the drive motor 1.

[0058] Specifically, such as Figures 2 to 6As shown, the intermediate connecting plate 4 has a first shaft through hole 41 at its center. The wall of the first shaft through hole 41 extends downward and the upper part of the hole wall is radially recessed outward to form a stepped shaft-shaped waterproof component receiving groove 42. A waterproof sealing ring 43 is fitted into the waterproof component receiving groove 42. The inner peripheral wall of the waterproof sealing ring 43 extends inward to form a flexible lip that seals against the outer peripheral wall of the motor shaft 12. The outer peripheral position of the intermediate connecting plate 4 has multiple connecting plate mounting holes 44 that align with the guide component mounting holes and the mounting blind holes 111. Thus, after the fastening connector passes through the guide component mounting holes of the guide component 2, the connecting plate mounting holes 44 of the intermediate connecting plate 4, and the mounting blind holes 111 of the stator seat 11 from bottom to top, the guide component 2 and the intermediate connecting plate 4 can be fixedly mounted on the stator seat 11. In addition, as Figures 2 to 7 As shown, in order to prevent liquid from splashing out from the upper part of the guide member 2 and getting on the drive motor 1 and causing corrosion, the outer periphery of the intermediate connecting plate 4 extends downward to form a downward flange. In this way, the intermediate connecting plate 4 can better seal the upper opening of the guide member 2.

[0059] Optionally, such as Figures 2 to 7 As shown, the guide member 2 is in the shape of an upright funnel. The guide member 2 has a guide cavity 23, and a second shaft outlet hole 22 through which the motor shaft 12 passes is located at the center of the bottom wall of the guide member 2. Multiple drain ports 21 are spaced apart circumferentially along the second shaft outlet hole 22 on the bottom wall of the guide member 2. The peripheral wall of the second shaft outlet hole 22 extends upward and abuts against the peripheral wall of the first shaft outlet hole 41 around the intermediate connecting plate 4. The drain ports 21 of the guide member 2 are separated from the second shaft outlet hole 22, and the peripheral wall of the second shaft outlet hole 22 extends upward to abut against the peripheral wall of the first shaft outlet hole 41. This prevents liquid entering the guide cavity 23 from directly rushing out of the second shaft outlet hole 22 onto the spray plate 3 and splashing as droplets. That is, with the obstruction of the upward-extending peripheral wall of the second shaft outlet hole 22, the liquid in the guide cavity 23 can flow at a low speed to the spray plate 3 through the drain port 21, thereby improving the atomization effect of the spraying device. At the same time, the peripheral wall of the second shaft outlet hole 22 of the guide member 2 extends upward to abut against the peripheral wall of the first shaft outlet hole 41, which can prevent the liquid in the guide cavity 23 from entering the first shaft outlet hole 41, further improving the waterproof sealing of the spraying device 100. In addition, it can also prevent the liquid in the guide cavity 23 from contacting the motor shaft 12, preventing the liquid in the guide cavity 23 from corroding the motor shaft 12, thereby improving the working reliability and service life of the spraying device 100.

[0060] Optionally, the spraying device 100 may further include a liquid receiving conduit 5 for supplying liquid to the guide member 2, one end of which extends into the guide cavity 23 of the guide member 2 and is fixedly connected between the intermediate connecting plate 4 and the guide member 2. Figures 2 to 4As shown, the liquid receiving conduit 5 is L-shaped. A liquid receiving conduit installation port is formed on the side wall of the guide member 2. The lower end of the liquid receiving conduit 5 extends laterally into the guide cavity 23 of the guide member 2 through the liquid receiving conduit installation port. A locking structure with a slot and a locking block is formed between the top of the lower end of the liquid receiving conduit 5 and the bottom wall of the intermediate connecting plate 4. A protruding limiting block is also formed at the bottom of the lower end of the liquid receiving conduit 5 and is located inside the side wall of the guide member 2 to prevent the liquid receiving conduit 5 from detaching outwards. Figure 2 As shown, the intermediate connecting plate 4 is provided with a conduit fixing slot 45, and a conduit clamping block extends from the top of the lower end of the liquid receiving conduit 5, which is clamped in the conduit fixing slot 45.

[0061] Optionally, the stator base 11 may include a stator base body 113 having a stator base cavity 1131 and an upper cover 114 that closes the stator base cavity 1131. The top wall of the upper cover 114 has a mounting device connection hole 1141 for fixed connection with the mounting device. In this way, the spraying device 100 can be fixedly connected to the mounting device through the mounting device connection hole 1141. Figures 1 to 4 As shown, the upper cover 114 includes a top wall and a peripheral wall extending downward from the outer periphery of the top wall. A mounting device connection hole 1141 is provided on the top wall. The peripheral wall of the upper cover 114 extends into the stator housing cavity 1131 and is aligned with the peripheral wall of the stator housing body 113, with a fixing hole for fixed installation via a fastening fitting. Furthermore, the top wall of the upper cover 114 also has a cable outlet hole 1143, which can be sealed with adhesive. Additionally, the drive motor 1 includes a control circuit board 15, which is located below the upper cover 114.

[0062] Optionally, such as Figures 2 to 4 As shown, the bottom wall of the stator base 11 has a third shaft through hole 1132 through which the motor shaft 12 passes and a lower bearing receiving groove 1133 arranged around the third shaft through hole 1132. The upper cover 114 is provided with an upper bearing receiving groove 1142. The motor shaft 12 is rotatably connected to the stator base 11 through the lower bearing 13 housed in the lower bearing receiving groove 1133. The motor shaft 12 is rotatably connected to the upper cover 114 through the upper bearing 14 housed in the upper bearing receiving groove 1142.

[0063] Since the diameter of the motor shaft 12 is usually small, if the motor shaft 12 is directly connected to the insertion hole of the spray disc 3, relative rotation between the motor shaft 12 and the spray disc 3 may occur. Therefore, the protruding end of the motor shaft 12 can be connected to the spray disc 3 via a connecting shaft 6. The sleeve-shaped connecting shaft 6 is fitted onto the motor shaft 12 and riveted to it. The spray disc 3 has a through-hole central connecting hole 31, the upper peripheral wall of which is radially recessed outward to form a connecting shaft limiting groove 32. One end of the connecting shaft 6 is inserted into the connecting shaft limiting groove 32 from top to bottom, forming a circumferential limiting structure. The spray disc 3 is fixedly mounted on the insertion end of the connecting shaft 6 by fasteners passing through the central connecting hole 31 from bottom to top. Thus, the motor shaft 12 is connected to the spray disc 3 via the connecting shaft 6 to form a circumferential limiting structure, which can prevent relative rotation between the motor shaft 12 and the spray disc 3, making the performance of the spraying device 100 more stable and reliable.

[0064] Optionally, such as Figure 3 As shown, the insertion end of the connecting shaft 6 can be in the shape of a flat shaft and be inserted into the connecting shaft limiting groove 32 to form a circumferential limiting structure. Of course, in addition to this, the shape of the insertion end of the connecting shaft 6 can be various, such as having a serrated or triangular cross-section, as long as it can be inserted into the connecting shaft limiting groove 32 to form a circumferential limiting structure. This application is not limited to this.

[0065] Accordingly, this application also provides a mobile device, which includes a mobile device body (not shown in the figure) and the aforementioned spraying device 100. The spraying device 100 is connected to the mobile device body via a stator 11. Optionally, the mobile device can be an airplane, a drone, or a car, etc. Of course, the spraying device 100 of this application can also be used for fixed spraying, that is, the spraying device 100 can be fixedly installed at the position to be sprayed for fixed spraying.

[0066] In summary, the present invention provides a novel spraying device and mobile device, which has a simple and compact structure, good heat dissipation performance, high reliability, long service life, convenient installation, and low cost.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0071] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0072] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A spraying device, characterized in that, The spraying device (100) includes: The drive motor (1) includes a stator base (11) and a motor shaft (12) extending downward from the bottom wall of the stator base (11). The outer wall of the stator base (11) is provided with a waterproof mounting part that does not penetrate the outer wall of the stator base (11). The guide member (2) is provided with a drain port (21) and is fixedly connected to the stator seat (11) through the waterproof mounting part. An intermediate connecting plate (4) is provided between the bottom wall of the guide member (2) and the stator seat (11). The outer periphery of the intermediate connecting plate (4) extends downward to form a downward flange. The intermediate connecting plate (4) covers the upper opening of the guide member (2) and is provided with a first shaft through hole (41) for the motor shaft (12) to pass through. The hole wall of the first shaft through hole (41) extends downward and the upper hole wall of the first shaft through hole (41) is radially recessed outward to form a stepped shaft-shaped waterproof part receiving groove (42). The waterproof component receiving groove (42) contains a waterproof sealing ring (43); the guide component (2) is provided with a second shaft exit hole (22) through which the motor shaft (12) passes, the peripheral wall of the second shaft exit hole (22) extends upward and abuts against the peripheral wall of the first shaft exit hole (41) around the first shaft exit hole (41); the motor shaft (12) passes through the third shaft exit hole (1132) of the stator seat (11), the waterproof sealing ring (43), the first shaft exit hole (41) of the intermediate connecting plate (4) and the second shaft exit hole (22) of the guide component (2) in sequence before being connected to the spraying disc (3); and The spray disc (3) is located below the guide (2) and connected to the protruding end of the motor shaft (12) that passes through the guide (2).

2. The spraying device according to claim 1, characterized in that, The waterproof installation part consists of multiple blind holes (111) on the bottom surface of the bottom wall of the stator base (11). The flow guide (2) is provided with multiple flow guide installation holes (24) corresponding to the multiple blind holes (111). The flow guide (2) and the stator base (11) are fixedly connected by fastening connectors passing through the flow guide installation holes (24) and the blind holes (111).

3. The spraying device according to claim 2, characterized in that, The bottom wall of the stator base (11) is provided with a bottom wall reinforcing rib (112), and the mounting blind hole (111) extends upward from the bottom wall of the stator base (11) into the bottom wall reinforcing rib (112).

4. The spraying device according to claim 1, characterized in that, The plurality of drain ports (21) are arranged circumferentially at intervals along the second shaft through hole (22).

5. The spraying device according to claim 1, characterized in that, The spraying device (100) also includes a liquid receiving conduit (5) for supplying liquid to the guide member (2). One end of the liquid receiving conduit (5) extends into the guide cavity (23) of the guide member (2) and is fixedly connected between the intermediate connecting plate (4) and the guide member (2).

6. The spraying device according to any one of claims 1 to 5, characterized in that, The stator base (11) includes a stator base body (113) having a stator base cavity (1131) and an upper cover (114) that closes the stator base cavity (1131). The top wall of the upper cover (114) is provided with a mounting device connection hole (1141) that is fixedly connected to the mounting device.

7. The spraying device according to claim 6, characterized in that, The bottom wall of the stator base (11) has a third shaft through hole (1132) for the motor shaft (12) to pass through and a lower bearing receiving groove (1133) arranged around the third shaft through hole (1132). The upper cover (114) is provided with an upper bearing receiving groove (1142). The motor shaft (12) is rotatably connected to the stator base (11) through a lower bearing (13) housed in the lower bearing receiving groove (1133). The motor shaft (12) is rotatably connected to the upper cover (114) through an upper bearing (14) housed in the upper bearing receiving groove (1142).

8. The spraying device according to claim 6, characterized in that, The drive motor (1) also includes a control circuit board (15) disposed below the upper cover (114); and / or, the top wall of the upper cover (114) is provided with a wire outlet hole (1143), which is sealed by potting glue.

9. The spraying device according to claim 1, characterized in that, The extended end of the motor shaft (12) is connected to the spray disc (3) via a connecting shaft (6). The connecting shaft (6) is sleeved on the motor shaft (12) and riveted to the motor shaft (12). The spray disc (3) has a through central connecting hole (31) and a connecting shaft limiting groove (32) located above the central connecting hole (31). One end of the connecting shaft (6) is inserted into the connecting shaft limiting groove (32) and forms a circumferential limiting structure with the connecting shaft limiting groove (32). The spray disc (3) is fixedly installed on the inserted end of the connecting shaft (6) by fasteners passing through the central connecting hole (31).

10. The spraying device according to claim 9, characterized in that, The insertion end of the connecting shaft (6) is flat and is inserted into the connecting shaft limiting groove (32) to form the circumferential limiting structure.

11. A mobile device, characterized in that, The mobile device includes a mobile device body and a spraying device (100) according to any one of claims 1 to 10, the spraying device (100) being connected to the mobile device body via the stator (11).

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